Wireless Communication Terminal and Wireless Communication Method for Transmitting Uplink by Multiple Users

1. A wireless communication terminal, the terminal comprising: a processor; and a communication unit, wherein the processor is configured to: transmit, to a base wireless communication terminal, an uplink frame for allocating a resource for transmitting an uplink data, wherein the uplink frame includes first size information and second size information related to the uplink data, and transmit, to the a base wireless communication terminal, the uplink data based on the resource allocated based on the uplink frame, wherein each of the first size information and the second size information indicates a size of a queue in which the uplink data is stored.

2. The wireless communication terminal of claim 1 , wherein the first size information indicates a size related to uplink data corresponding to a first access class set, and wherein the second size information indicates a size related to uplink data corresponding to the second set of access classes.

3. The wireless communication terminal of claim 2 , wherein the first size information indicates a size of a first queue in which the uplink data is stored according to the first access class set, and wherein the second size information indicates a size of a second queue in which the uplink data is stored according to the second access class set.

4. The wireless communication terminal of claim 1 , wherein the second access class set includes at least one access class which is not included in the first access class set.

5. The wireless communication terminal of claim 1 , wherein the first size information and the second size information are included in buffer status information of the wireless communication terminal and transmitted through the uplink frame.

6. The wireless communication terminal of claim 5 , wherein the buffer status information includes at least one of an access class information of the uplink data and size information of the uplink data.

7. The wireless communication terminal of claim 1 , wherein the first size information and the second size information are used for multi-user uplink transmission scheduling of the base wireless communication terminal.

8. A wireless communication method of a wireless communication terminal, the method comprising: transmitting, to a base wireless communication terminal, an uplink frame for allocating a resource for transmitting an uplink data, wherein the uplink frame includes first size information and second size information related to the uplink data; and transmitting, to the a base wireless communication terminal, the uplink data based on the resource allocated based on the uplink frame, wherein each of the first size information and the second size information indicates a size of a queue in which the uplink data is stored.

9. The wireless communication terminal of claim 8 , wherein the first size information indicates a size related to uplink data corresponding to a first access class set, and wherein the second size information indicates a size related to uplink data corresponding to the second set of access classes.

10. The wireless communication terminal of claim 9 , wherein the first size information indicates a size of a first queue in which the uplink data is stored according to the first access class set, and wherein the second size information indicates a size of a second queue in which the uplink data is stored according to the second access class set.

11. The wireless communication terminal of claim 8 , wherein the second access class set includes at least one access class which is not included in the first access class set.

12. The wireless communication terminal of claim 8 , wherein the first size information and the second size information are included in buffer status information of the wireless communication terminal and transmitted through the uplink frame.

13. The wireless communication terminal of claim 12 , wherein the buffer status information includes at least one of an access class information of the uplink data and size information of the uplink data.

14. The wireless communication terminal of claim 8 , wherein the first size information and the second size information are used for multi-user uplink transmission scheduling of the base wireless communication terminal.